Gas and other engine.



PATBNTED JUNE 23, 1908.v

J. S.` MILLER.

GAS AND OTHER ENGINE.

APPLICATION FILED'NOV. 26. 190V.

V 1 l? H Q O' Q fa (y AA Y 2C i l C)A E E E (U1/wenken thereon.

JOHN S. MILLER., (TF ARNOLILJCANSAS. i

GAS AND OTHER ENGINE.

specification bf Letters Patent.

Patented June 23, 1908.

Application filed November 26, 1907. Serial No. 403,916.

have invented certain new and useful Im-r and.

provements in Gas and other Engines, do herebv declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexeddrawings, making a part of this specification,and 'to the letters and figures of reference`1narked The presentinvention has reference to gas, gasolene. and like engines where it .isdesired to change the size and capacity of the compression chamber andthe object thereof isv to provide a simple and etl'eetive means forsimultaneously adjusting the piston rods so as to increase or diminishthe capacity of the compression chamber as circumstances may require aswill be hereinafter described and claimed. 1

The drawing represents a portion of an engine sufficient vto illustratethe application of mv invention thereto, the operating parts being inelevation with the cylinder and .pisttni-heads in section.

The cylinder represented at A is supported upon a frame or standardB,'the gas, gasolene or other motive power fiuid entering the cyl headsC being of any desirable construction y and form and connected to thepiston-rods D in an)v well known manner.

T lieseveral parts as above described may be of the ordinaryconstruction as I do not wish to be understood as limiting the inventionto the form and construction of the cylinder, piston-heads or'pistonrods shown in the drawing, as they may bev variously modified or changedwithout in'any manner de-' parting from the essential feat-ure of theinvention.

To the outer ends ofthepiston-rods D are suitably pivoted the uprightVarms E and to these arms suit ably'eonnected the ou ter ends ofpitmen-rods F winch connect at their inner ends in the usual manner wlthsuitable cranks G saidcranks inturn connecting with the drivingmechanism of the engine, the. pistons having imparted to them areclprocating'rnotion through the -medium of the gas, 'gasolene or othermotive ower tluld en tering the compression vcham er X through theinleta.

The pitmen-rods andcranks `aboverdepart of mv scribed are of theordinary construction and a common feature in engines and form noinvention and consequently may be changed or modified in construction asfound desirable.

As previously stated the invention resides in suitable means forincreasing or diminishingI the size of the compression chamber tocorrespondingly increase or diminish the power of the engine at will,and I have shown one of man v means that may be employed for attainingthis object, which in the resent instance consists of a right and let-hand screw rod H provided with a nut orv turnbuckle b.

, The screw threaded ends of the rod H engage with correspondingly screwthreaded sockets in blocks or heads I )ivoted or otherwise suitablyconnected to tie lower ends of the arms E. 'Vhen it is desired toincrease therapacit;v or size of the compression chamber from thatshown, the rod H is turned in the proper direction which will force thearms E outward and the piston rods and piston heads will be carried withthem in the direction of the arrows, thereby increasing the size of thecompression chamber at will and as circumstances require.

IIaving now fully described my invention, what I claim as new and'desireto secure b v Letters Patent, is

1. In an explosive engine, a cylinder, pis

tons therein with their rods extending in opposite directions, ivotallymountedupright arms pivotal y connected with the outer ends of saidvpiston rods, aA driving shaft, connections between the same and saidarms intermediate the ends of the latter, and adjustable meansconnecting the 'lower ends of said arms.

2." In an explosive engine, a cylinder, oppositely dis osedpistonstherein, upright arms pivotal y connected at their upper ends tothe outer ends of thev iston rods, heads pivotally connected to t elowerends. of

'said arms, means adjustably connecting said heads, and connections'between said arms intermediate their ends 4 and thedrlvmg mechanism ofthe engine.

Intestimony whereof I affix-my signaturev in, presence of 'twoWitnesses.

JOHN S, MILLER. Witnesses: I

IRA O. SHELLENBERGER, VMrs.' WSE.v TaAYLon.

